\lim_{h \to 0} \frac{\tan^{-1}(x+h) - \tan^{-1}(x)}{h}
Added by Linda L.
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Step 1: Recognize the given expression is the definition of the derivative of f(x)=tan^{-1}(x): lim_{h->0} (tan^{-1}(x+h)-tan^{-1}(x))/h = f'(x). Show more…
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